Square single-wire detectors for neutron diffraction studies

Bleif, H.-J.; Clemens, Daniel; Eads, A.; Fox, W.; Gebauer, B.; Geevers, M.; Herbach, C.-M.; Lozowoski, W.; Mezei, F.; Peters, Judith; Sokol, P. E.; Solberg, K.; Vanderwerp, J.; Visser, G.; Wilpert, Th.; Wulf, F.

doi:10.1016/j.nima.2007.06.114

Cited by 4 publications

(2 citation statements)

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“…1 They can, for example, provide high precision measurements when working as part of a time expansion chamber system in TWIST (The TRIUMF Weak Interaction Symmetry Test) experiments. In the last few years, wire chambers have been frequently used for neutron detection because of their low cost, large area and reliability.…”

Section: Introductionmentioning

confidence: 99%

Application of a One-Dimensional Position Sensitive Chamber on Synchrotron Radiation

Liu

2014

Int. J. Mod. Phys. Conf. Ser.

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In the last few years, wire chambers have been frequently used for X-ray detection because of their low cost, large area and reliability. X-ray diffraction is an irreplaceable method for powder crystal lattice measurements. A one-dimensional single-wire chamber has been developed in our lab to provide high position resolution for powder diffraction experiments using synchrotron radiation. There are 200 readout strips of 0.5 mm width with a pitch of 1.0 mm in the X direction, and the working gas is a mixture of Ar and CO2 (90/10). The one-dimensional position of the original ionization point is determined by the adjacent strip's distribution information using the center of gravity method. Recently, a study of the detector's performance and diffraction image was completed at the 1W1B laboratory of the Beijing Synchrotron Radiation Facility (BSRF) using a sample of SiO2. Most of the relative errors between the measured values of diffraction angles and existing data were less than 1%. The best position resolution achieved for the detector in the test was 71 µm (σ value) with a 20 µm slit collimator. Finally, by changing the detector height in incremental distances from the center of the sample, the one-dimensional detector achieved a two-dimensional diffraction imaging function, and the results are in good agreement with standard data.

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Section: Introductionmentioning

confidence: 99%

Application of a One-Dimensional Position Sensitive Chamber on Synchrotron Radiation

Liu

2014

Int. J. Mod. Phys. Conf. Ser.

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“…They can, for example, provide high precision measurement when working as part of time expansion chamber system in TWIST experiment [2]. In the last few years, wire chambers are frequently applied on neutron detection because of their low-cost, large-area and reliability [3]. Xray diffraction is an irreplaceable method for powder crystal lattice measurement.…”

Section: Introductionmentioning

confidence: 99%

Beam test of a one-dimensional position sensitive chamber on synchrotron radiation

Liu

Dai²,

Qi³

et al. 2013

Chinese Phys. C

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One-dimensional single-wire chamber was developed to provide high position resolution for powder diffraction experiments with synchrotron radiation. A diffraction test using the sample of SiO2 has been accomplished at 1W2B laboratory of Beijing Synchrotron Radiation Source. The data of beam test were analyzed and some diffraction angles were obtained. The experimental results were in good agreement with standard data from ICDD powder diffraction file. The precision of diffraction angles was 1% to 4.7%. Most of relative errors between measured values of diffraction angles and existing data were less than 1%. As for the detector, the best position resolution in the test was 138 µm (σ value) with an X-ray tube. Finally, discussions of the results were given. The major factor that affected the precision of measurement was deviation from the flat structure of detector. The effect was analyzed and it came to a conclusion that it would be the optimal measurement scheme when the distance between the powder sample and detector was from 400 mm to 600 mm.

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